HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesPupfishesWarm Springs pupfish Warm Springs pupfish (Cyprinodon nevadensis pectoralis) Scientific name: Cyprinodon nevadensis pectoralis Miller, 1948 The Warm Springs pupfish (Cyprinodon nevadensis pectoralis) is a freshwater fish of the family Cyprinodontidae. In the aquarium it needs water at 25–30°C (77–86°F). Native range: North America, Devils Hole, Ash Meadows in Nevada, USA. Warm Springs pupfish care at a glanceTemperature25–30°C (77–86°F) BiologyNot a seasonal killifish. Is difficult to maintain in aquarium.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCyprinodon nevadensis pectoralisFamilyCyprinodontidae (Pupfishes)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length4.0EnvironmentFreshwater; benthopelagic; non-migratoryClimateSubtropicalDistributionNorth America: Devils Hole, Ash Meadows in Nevada, USA.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026